Book-back-printing machine



Jan. I, 1929,

H. TOLMAN BOOK BACK PRINTING MACHINE 1 t e m Qw 0 m ,7 w m s ll... 2 s m W M S B a u 9 .R 1 1 3 5 m \\fib ,5 6 4 7 4 a H. II. H m m 5 z a, A 26 L F F W IN VENTOR. [fa/M A TTORNEYX.

Jan. 1, 1929. 1,697,799

H. TOLMAN BOOK BACK PRINTING MACHINE 2 Sheets-Sheet 2 Filed Feb. 25, 1928 qllll INVENTOR.

a I verygreatly.

Patented Jan. 1, 1929 f [UNITED STATES HARRY TOLMAN', OF MANCHESTER, NEW HAMPSHIRE.

BOOK-BAGK-PRINTING MACHINE.

Application filed February 25, 1928. 7 Serial No. 256,997.

' in stamping the lines'of type directly across or at rightfll gles to the plane ofthe book, and; instarting each line at such a point that it will be in the middle of the book.

In stamping gold letters, what is known as sized goldleaf is generally used and this requires that the type should be heated so as to soften thewax and also the glue or other material which causes the letters to move each book as printed stick to the book.

.The difficulty in-printingbook backs is that some arecurved much more than others and the thickness of different books varies I. am aware that devices have been used wherein the book is held in a rocking-holder, the center of oscillation of which is below the book and, that this is caused to move theoretically with a stamp or tool, the two rocking together.

It is obvious thatjif the book'alone rocked,

the stamp would. smudge and on the other hand, if the stamping tool rocked on a pivot I i back to be printed, the center of such curved rack being below and substantially near the center of the arc of the book backrand by carrying the tool on a movable pivot which moves along such rack, Ijcan use a-- fixed book holder and at the same time get a clean cut impression without smudg'ing.

With my device I can quickly position a book with the'center line of its back on a pre-determined center line which coincides with the middle point of the line of type to be impressed thereon, and can q'uickly'reand replace itjby another. 1 I

Byusing {a type holder which is pivoted to a tool holder; the latterf of which is pivoted, to'the frame ofthe machine, I am that-they can readily be; removed and others reset their place Thispivoted or hinged action'of the tool holder also allows me to bring the type down on the book back yieldingly while at the same time the line of type is alwaysmaintained at right angles to the "center line of the book back. By using the curved rack and movable pivot for the type holder and particularly by lnterposinga compression spring, ,and if necessary a. second pivot with suitable "stops, I provide mechanism which will .always accurately position the, line of type and permit of any desired manual pressure in rocking the line of type whereby my dewoe is not only accurate but very sensitive. In the drawings,Fig. 1 is a perspective view of a complete machine of my preferred construction showing in dotted'linesf a book in pos1t1on.- Y

f V Fig, 2 isa perspective View showing the tool holder and tool with parts broken away, and a book shown in dotted lines in type setting position inidotted lines.

F 1g. at is an enlarged detailed viewlooklng'fro m 'the left, as shown by the direction of the arrows," on line44 of ,Fig. 3. V

Fig. 5 is a view as looking from the right as from thedirection of the arrows,.on'line I of Fig.3, ofa modified construction in "which the slide, slideways, spring and slide pivot are omitted.

In the drawings, S. represents a. stand shownflas having four legsl, 2, 3, 4, medially connected by Crossbars 5,, 6, 7 8.

represents a book which is held in position bybook supports and clamps indicated generally byfL', These include a platform'38 carriedby a verticalrack-36which can be raised and lowered by meanso'f a pinion 35 carried by a. shaft'32, at the 'end of which is a gear 29 operatedby another gear 27, having a handle 28... The ear 27 is carried by cross piece .3 0 while s aft 32 is carried by a bearing'8lon cross piece 6 and bearing33 carried by, cross piece 34:. -A

locking pawl 37 is provided to hold 27, a t any desired-point; PlatformBS can be'iaised or lowered to bring the back Such-asQOof-a book at the desired level withreference-to thestamping devices; enabled; to turn-the types upside down so 1D isa bracket fi-Xedto stand andhaving a -transverse .hole, 10 through .which 24, 25, having a handle 26.' This screw passes through adjoining ends of the side supports 20 and 21. Through the other ends of side supports 20 and 21 passes another right and left screw 124 and 125, such screw having a handle 126. This" right and left screw 124, 125 passes through a hole in a support 9. By turning the handles 126 and 26 together the side supports are caused to move't'ogether towards and from a certain theoretical vertical v plane which passes through the center lineof the back 90 of the book B, and which determines the positioning of the'various parts.

28 is an end'guide' carried by screw 27 which'passesthrou'gh support9 and can be turned by a handle 29. This serves as an endguide for the book B so that where a number of books ofthe same size are to be printed in the same way the lines of printing will come in the same place.

C represents a rocker supported by arms 11, 11, which extend down on each side of bracket'D, Rocker C is pivoted to bracket D by means of a pivot pin 12 passed through asses'throu h carrier F and en a 'es rocker C so that the tool carrier can be held in any desired position. f I j The end of tool carrier F which is nearestthe book holders is bent at right angles and cut away so as to form the slideways of which is seated in counterbore 1621and engages and holds resiliently up in place the slide 58 slidable'in slideways 60, 60.

' 'H is a gear casing pivotedito slide 58 by means of a bolt or pivot 59 so that it can rock in a vertical plane.

.. Gear casing is preferably convex at the top and has at the top a slot 53 and at the bottom a slot 54 of a size to receive the head 157 of stud E which canmove in these slots Jest-55.. e

' At the bottom of gear casing His arafck R which is' convex with reference to the position' of the'book B. Y is acoil box'pr'ovided on the inside with heating elements-U connected by means of wiresfVV with a source of electric fi ay y means ffwhich it can be heated at will. I

to change or reset the type.

It will be seen that coil box limits its movement'by striking the side of slideways 60, 60, and I also provide stops 152, 152 on coil box Y which limits it rocking'movement 'byrstriking gear casing H. The type holder A, known to the printing trade as a pallet is of well known form and is provided with slidable type holding jaws J, J, between which the movable'type mem bers T, T can be set, the jaws J, J, being adjustable by the right and left thumb screw 70, 70. By this mechanism the center line of the type is always at'the same point, which is preferably the center line of the handle K. j This type holder A is hinged or pivoted by means of thehinged members 47,48 and 4'5, 46 to the coilbox Y in such manner that it can be swung over an arc of more than 90. As shown inthe dotted lines in Fig. 3, it and the tool holder can be swung up to the vertical position which makes it very easy 44 is a spring on rod 49 which tends to holdtype holder A against the coil box Y.

In Fig. 5, I show a tool holder 80 which is similar to F but is bent-down at right angles at its end 81 and to this the gear casing H is fixed by two screwsg82, 83 so that; it has no pivotal movement as does the other construction on pivot 59. The curve of the rack such as 85 may preferably be somewhat more than that of the ordinary book and the book preferably is adjusted in a position where its back will allow the type holderand type to come down on it firmly'without being held back by the stop 112.

My machine may be used'with ink instead of gold leaf and pictures or Cute may housed in place of type.

I claim:

1. In a book back printing machine, the

combination with a stand; of a book holder carried by the stand including-anadjustable bottom book support, an adjustable end guide and a side clamp having means to move its jaws equally and simultaneously towards and from a bracket fixed to the stand cent-rally between the jaws; said bracket g a {rocker'slide'carried-on a horizontal pivot by said bracket; a tool carrier adjustable'and slidable in the rocker slide in aedirection guideways extending own at right angles from the end of the tool carrier; a gear casing resiliently shdable 1n said guideways sald gear caslng including a convexly curved gear rack, curved stud head guides and a v hinged to the coil box and having means to receive and hold type in place; and an operating handle fixed to the type holder.

2. In a book back printing machine, the combination with a stand; of a book holder carried by the stand including an adjustable bottom book support, an adjustable end guide and a side clamp having means to move its jaws equally and simultaneously towards and from a bracket fixed to the stand centrally between the jaws; said bracket; a rocker slide carried on a horizontal pivot by said bracket; a tool carrier adjustable and slidable in the rocker slide in a direction parallel to and midway between said jaws; a gear casing transversely fixed to the end of said tool carrier and including a convexly curved gear rack, curved stud head guides and a curved stud slot; a tool pivot stud including a head in engagement with said curved head guides and an axle shank; a gear in engagement with the gear rack and revoluble on said axle shank; an electrically heated coilbox fixedly carried by said axle shank; a type holder horizontally and transversely hinged to the coil box and having means to receive and hold type in place; and an operating handle fixed to the type holder.

3. In a book back gold leaf lettering machine, the combination with a stand having means to hold a book; with a tool carrier so pivoted to the stand as to swing on a pivot which is perpendicular to a plane passing through the middle of the book and its back; a gear casing transversely fixed to the end of said tool carrier and including a convexly curved gear rack, curved stud head guides and a curved stud slot; a tool pivot stud including a head in engagement with said vcurved head guides and an axle shank; a gear in engagement with the gear rack and revoluble on said axle shank; an electrically heated coil box fixedly carried by said axle shank; a type holder horizontally and transversely hinged to the coil box and having means to receive and hold type in place; and an operating handle fixed to the type holder.

I. In a book back gold leaf lettering ma chine, the combination with a stand having means to hold a book; with a tool carrier so pivoted to the stand as to swing on a pivot which is perpendicular to a plane passing through the middle of the book and its back; a gear casing transversely fixed to the end of said tool carrier and including a convexly curved gear rack, curved stud head guides and a curved stud slot; a tool pivot stud including a head in engagement with said curved head guides and an axle shank; a gear in engagement with the gear rack and revoluble on said axle shank; and type holding means carried by said axle shank.

5. In a book back printing machine, the combination with a stand having means to hold a book; with a tool carrier so pivoted to the stand as to swing on a pivot which is perpendicular to a plane passing through V the middle of the book and its back; a gear casingv transversely fixed to the end of said tool carrier and including a convexly curved gear rack; an axle shank; a gear in engagement with the gear rack and revoluble on said axle shank; printing means carried by the axle shank; and means to hold the printing means and the gear casing together.

HARRY TOLMAN. 

